(1) sin18°=0.3090\sin 18° = 0.3090sin18°=0.3090 (2) cos18°=0.9511\cos 18° = 0.9511cos18°=0.9511 (3) tan18°=0.3249\tan 18° = 0.3249tan18°=0.3249 (4) sin52°=0.7880\sin 52° = 0.7880sin52°=0.7880 (5) cos52°=0.6157\cos 52° = 0.6157cos52°=0.6157 (6) tan52°=1.2799\tan 52° = 1.2799tan52°=1.2799